Jovavic
Hostile Apostle
Phoenix Point definitely had some of the old Xcom feel since it's the same developer and it had some good ideas like the free aim but I dunno, just couldn't put my 18 bucks down on it right now, it felt "flat" as you said. I did get Mutant Year Zero a few months back and tried it for a couple hours and it really didn't grab me so I moved on, but maybe I'll circle back to it shortly.